Counter for coil winding machines



Dec. 15, 1953 w. SlVO ET AL COUNTER FOR COIL WINDING MACHINES Filed May19, 1951 'ullllllllll' INVENTORS W. SIVO H. S. WALENDZIK ATTORNEYPatented Dec. 15, 1953 2,662,693 COUNTER FOR COIL WINDING MACHINESWalter Sivo, Georgetown,

zik, Danbury, Conn.,

New York and Henry S. Walendassignors, by mcsne assignments, to Westerncorporated, New York, N. Y., a corporation of Electric Company, In-

Application May 19, 1951, Serial N 0. 227,194 4 Claims. (Cl. 235-92)This invention relates to counters for coil winding machines, and moreparticularly to counters for the slider type toroidal winding machines.

Toroidal winding machines are employed in Winding coils of insulatedelectrical conductors on annular cores, and include shuttles usuallyequipped with removable segments so that the annular cores may be singlymounted for the shuttle to travel therethrough about its axis. Such ashuttle is filled with a supply of insulated wire sufiicient to form acoil on the core, and the leading end of the wire is threaded on thecore. If the machine is of the slider type, that is, if it employs awire guide slidably mounted on the shuttle for movement therewith andrelative thereto. the wire is threaded through the usual groove in theguide or slider.

In the present state of the art, it has been difficult to count theexact number of turns which the slider winds on the core. This conditionhas existed because, while the shuttle rotates at a constant rate ofspeed during the winding of the coil, the slider slips backwards on theshuttle an amount sometimes equal to the length of one turn of the coilduring each revolution oi the shuttle, giving the slider a constantlyvarying rate of speed. It has been proposed to provide a counter andmeans operable by the loop of wire between the core and the slider, butno apparatus sufficiently sensitive to be consistently actuated by theloop has been provided hitherto.

An object of the invention is to provide new and improved counters forcoil winding machines.

Another object of the invention is to provide a counter for a coilwinding machine which is sensitive, simple in structure and highlyaccurate in counting the exact number of turns wound on a core.

A counter illustrating certain features of the invention may include anabutment positioned in the path of a strand being wound around a core, aflared shoe, means urging the shoe toward the abutment, a counter, meansfor operating the counter, and an arm carried by the shoe for actuatingthe counter-operating means when the shoe is moved away from theabutment by a 1001) advanced between the abutment and the shoe.

A complete understanding of the invention may be obtained from thefollowing detailed description of a counter forming a specificembodiment thereof, when read in conjunction with the appended drawing,in which:

Fig. 1 is a fragmentary vertical section of a 2 toroidal winding machineincluding a counter embodying the invention, and

2 is a fragmentary horizontal section taken along line 2-2 of Fig. 1.

Referring now in detail to the drawings, there is shown therein atoroidal winding machine including a, clamp id for holding an annularcore i l during the winding of a given number of turns of insulated wireI 2 upon approximately one-half of the core also for supporting thepartially wound core during the winding of convolutions of tie wire uponthe other half of the core. The clamp is rocked the centerline of thecore in the conventional manner during the winding operations. Themachine includes a shuttle 14 having a section closed by a removablesegment i5 after the core has been mounted in the clamp ill. The shuttleM has an annular track is completed by the segment [5, and has a supplyof the wire I 2 thereon prior to the operation of the machine to windthe convolutions of the wire on the core. The shuttle is supported byrollers ll--I'l and a driving gear it, which engages teeth l9| 9 on theinner periphery of the shuttle hi and its segment IS. A driving shaft 2:for the gear I3 is driven by suitable means (not shown).

A switch 22 including a rigid contact arm 23, a spring contact arm 24and a block 25 of electrical insulating material is mounted on one endof a torsion spring 26 fastened and mounted at its other end to a fixedpost 28. The spring urges the switch in a clockwise direction, as viewedin Fig. 2, to hold the contact arm 23 against a thumb screw 2s supportedby a bracket 38 rigidly secured to the base 3| of the machine. An arm 32mounted pivotally on the post 28 is urged by a torsion spring 33 in acounterclockwise direction to press an elongated shoe 34 against a boss35 having a rounded edge. The shoe 34 is mounted pivotally on the arm atthe central portion of the shoe. The shoe is pro vided with a straightcentral portion 38 and rocker-like end portions 37 and 38. Aswitchclosing arm 4% fastened rigidly to one end of the shoe carried aninsulating presser El thereon.

The wire l2 (Fig. 1) is revolved around the core by the shuttle M, andis payed off the shuttle by a slider 53, the operation of which is suchthat a loop of the wire is formed for each complete revolution of theslider. Each loop is pulled laterally of the wire between the boss 35and the shoe 34. At first, the wire pushes the righthand end of theshoe, as viewed in Fig. 2, away from

